PJM Website

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The PJM Interconnection operates a competitive wholesale electricity market and manages the reliability of its transmission grid. PJM provides open access to the transmission and performs long-term planning. In managing the grid, PJM centrally dispatches generation and coordinates the movement of wholesale electricity in all or part of 13 states (Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia and West Virginia) and the District of Columbia. PJM’s markets include energy (day-ahead and real-time), capacity and ancillary services.

PJM was founded in 1927 as a power pool of three utilities serving customers in Pennsylvania and New Jersey. In 1956, with the addition of two Maryland utilities, it became the Pennsylvania-New Jersey-Maryland Interconnection, or PJM. PJM became a fully functioning ISO in 1996 and, in 1997, it introduced markets with bid-based pricing and locational market pricing (LMP). PJM was designated an RTO in 2001.

List of Orders

Click on the categories below to view additional information.

Docket No. Date Issued Company Title
ER22-2931-000 December 20, 2023 PJM Interconnection LLC Order on Unexecuted Interconnection Service Agreements

EL23-53-003

December 19, 2023

Essential Power OPP, LLC, et al. v. PJM Interconnection, L.L.C.

Order Approving Uncontested Settlement

ER23-2975-000

December 19, 2023 PJM Interconnection LLC Order Approving Uncontested Settlement
EL23-63-000 December 19, 2023

Energy Harbor LLC v. PJM Interconnection, L.L.C.

Order Denying Complaint

ER24-163-000 December 19, 2023 PJM Interconnection LLC Order on Abandoned Plant Incentive
ER23-2327-000 September 21, 2023 PJM Interconnection, L.L.C. Order Addressing Arguments Raised on Rehearing
EL22-32-000 September 21, 2023 PJM Interconnection, L.L.C. Order Accepting, In Part, Proposed Tariff Revisions, Requiring Tariff Revisions Pursuant To Section 206, And Addressing Arguments Raised On Rehearing
EL22-65-000 September 21, 2023 Southwest Power Pool Inc. Order on Show Cause Proceeding
ER23-729-001 July 27, 2023 PJM Interconnection, L.L.C. Order Addressing Arguments Raised on Rehearing
ES23-23-000 March 16, 2023 PJM Interconnection, L.L.C. Order Modifying Authorization to Issue Securities
Docket No. Date Issued Company Title
EL19-58-007 July 28, 2022 PJM Interconnection, L.L.C. Order Addressing Arguments Raised on Rehearing and Dismissing Request for Clarification
EL22-26-000 February 17, 2022 PJM Interconnection, L.L.C. Order Finding Operating Agreement Unjust and Unreasonable and Establishing Replacement Rate
ER21-1802-000 February 17, 2022 PJM Interconnection, L.L.C.  Order Accepting Tariff Revisions
EL19-47-000  January 20, 2022 Independent Market Monitor for PJM v. PJM Interconnection, L.L.C. 
 
Order Dismissing Motion for Clarification and Waiver 
ER19-105-005  January 20, 2022 PJM Interconnection, L.L.C. Order to reconsider the Commission’s Prior Orders
ER20-1832-001 January 20, 2022 PJM Interconnection, L.L.C.  Proposed Revisions To Its Formula Rate
Docket No. Date Issued Company Title
ER21-2965-000 December 16, 2021 PJM Interconnection, L.L.C., Atlantic City Electric Company, Delmarva Power & Light Company, and PECO Energy Company Order on Formula Rate Tariff Revisions and Establishing Hearing and Settlement Judge Procedures
ER21-1635-002 December 16, 2021 PJM Interconnection, L.L.C. Letter Order Accepting Proposed Tariff Records
ER20-1739-000 November 18, 2021 American Transmission Systems, Inc., PJM Interconnection, L.L.C. Order on Compliance and Establishing Hearing and Settlement Judge Procedures.
EL21-62-001  September 23, 2021 Jackson Generation, LLC v. PJM Interconnection, L.L.C. Rehearing  Order Addressing Argments Raised On Rehearing
EL21-78-000 June 17, 2021 PJM Interconnection, L.L.C. Advisory 1 of 1 Order to Show Cause
ER17-1433-001 May 20, 2021 PJM Interconnection, L.L.C. Order Rejecting Compliance Filing, Directing Further Compliance, and Dismissing Complaint
ER19-2722-003 May 20, 2021 PJM Interconnection, L.L.C. Order Accepting Compliance Filing
ER20-1150-001 April 15, 2021 PJM Interconnection, L.L.C., The Dayton Power & Light Company Letter Order Approving Uncontested Settlement
ER20-227-001 April 15, 2021 PJM Interconnection, L.L.C. and Jersey Central Power & Light Co. Letter order approving settlement
EL19-47-000 March 18, 2021 Independent Market Monitor for PJM 
v. 
PJM Interconnection, L.L.C.
Order Granting Complaints and Ordering Additional Briefing
ER20-2686-000 02/18/21 PJM Interconnection, L.L.C. Order Accepting Compliance Filing
EL20-30-001 01/19/21 Indiana Municipal Power Agency, and City of Lawrenceburg, Indiana
v.
PJM Interconnection, L.L.C., American Electric Power Service Corp., and Lawrenceburg Power, LLC.
Order Addressing Arguments Raised on Rehearing
Docket No. Date Issued Company Title
ER20-2308-000 12/17/20 PJM Interconnection, L.L.C. Order Rejecting Proposed Tariff Revisions
ER19-2722-000 12/17/20 PJM Interconnection, L.L.C. Order Accepting in Part and Rejecting in Part Compliance Filing and Directing Further Compliance
ER20-2046-001 12/17/20 American Transmission Systems, Inc., PJM Interconnection, L.L.C. Order Addressing Arguments Raised on Rehearing
ER20-841-001 11/19/20 PJM Interconnection, L.L.C. Order Addressing Arguments Raised on Rehearing
ER18-1314-003 10/15/20 PJM Interconnection, L.L.C. Order on Compliance, Granting Waiver Request, Addressing Arguments Raised on Rehearing, and Setting Aside Prior Order, in Part
EL19-78-001 10/15/20 National Railroad Passenger Corporation
v.
PPL Electric Utilities Corporation and PJM Interconnection, L.L.C.
Order Denying Clarification and Addressing Arguments Raised on Rehearing
EL20-30-000 09/17/20 Indiana Municipal Power Agency, and City of Lawrenceburg, Indiana
v.
PJM Interconnection, L.L.C., American Electric Power Service Corp., and Lawrenceburg Power, LLC
Order Granting in Part and Denying in Part Petition for Declaratory Order and Complaint, and Instituting Proceeding Under Section 206 of the Federal Power Act
ER20-543-000 09/17/20 PJM Interconnection, L.L.C. Order Addressing Arguments Raised on Rehearing and Dismissing Request for Stay
ER20-431-001 09/17/20 Ohio Power Company, AEP Ohio Transmission Company, Inc., and PJM Interconnection, L.L.C. Letter Order Accepting Compliance Filing Subject to Compliance Filing
ER20-609-001 09/17/20 PJM Interconnection, L.L.C.AEP Ohio Transmission Company, Inc.
Ohio Power Company
Letter Order Accepting Compliance Filing Subject to Compliance Filing
ER19-1661-002 07/17/20 PJM Interconnection, L.L.C.   Order Modifying Prior Order
ER20-1414-000 07/16/20 PJM Interconnection, L.L.C.   Order Accepting Tariff Revisions
EL14-37-000 07/16/20  PJM Interconnection, L.L.C.   Order on Section 206 Investigation and Directing Compliance
ER19-469-003 07/16/20  PJM Interconnection, L.L.C.   Order on Compliance Filing
ER18-899-002 06/18/20  PJM Interconnection, L.L.C.   Order Denying Rehearing and Granting Clarification 
EL19-91-000 06/18/20  PJM Interconnection, L.L.C.  Order on Section 206 Investigation and Directing Compliance 
EL18-61-001  05/21/20 Public Citizen, Inc. 
v. 
PJM Interconnection L.L.C.
Order Denying Rehearing 
EL17-32-000 05/21/20 Old Dominion Electric Cooperative and Direct Energy Business, LLC on behalf of itself and its affiliate, Direct Energy Business Marketing, LLC and American Municipal Power, Inc. 
v. 
PJM Interconnection L.L.C.
Order Denying Complaints 
ER19-1958-001 05/21/20 PJM Interconnection, L.L.C. Order on Compliance and Rehearing 
EL18-145-000  05/21/20 Tilton Energy LLC
v.
PJM Interconnection, L.L.C.  
Order on Paper Hearing and Denying Complaint 
ER19-1486-000, EL19-58-000 05/21/20 PJM Interconnection, L.L.C. Order on Proposed Tariff and Operating Agreement Revisions 
ER19-105-004  04/16/20 PJM Interconnection, L.L.C. Order Denying Rehearing
ER15-2563-00  04/16/20 PJM Interconnection, L.L.C. Order on Rehearing Requests
ER17-1138-002  03/19/20 PJM Interconnection, L.L.C. Order Denying Rehearing and Accepting Compliance Filing
ER17-950-000  02/20/20 PJM Interconnection, L.L.C. Order Accepting Tariff Revisions and Denying Request for Rehearing and Clarification
EL17-68-000  02/20/20 Linden VFT, LLC
v.
PJM Interconnection, L.L.C.
Order Denying Complaint
EL15-67-002  02/20/20 Linden VFT, LLC
v.
PJM Interconnection, L.L.C.
Order Denying Rehearing Requests
ER19-2722-000  01/23/20 PJM Interconnection, L.L.C. Order Holding Proceeding in Abeyance
EL17-84-001  01/23/20 PJM Interconnection, L.L.C. Order Denying Rehearing
EL17-90-001  01/23/20 Linden VFT, LLC
v.
Public Service Electric and Gas Company and PJM Interconnection, L.L.C.
Order Denying Rehearing
ER20-45-000  01/23/20 PJM Interconnection, L.L.C. Order Accepting Compliance Filing
Docket No. Date Issued Company Title
ER18-899-002 06/18/20 PJM Interconnection, L.L.C.  Order Denying Rehearing and Granting Clarification 
EL19-91-000 06/18/20 PJM Interconnection, L.L.C.  Order on Section 206 Investigation and Directing Compliance 
EL18-61-001 05/21/20 Public Citizen, Inc. 
v. 
PJM Interconnection L.L.C.
Order Denying Rehearing 
EL17-32-000Order  05/21/20 Old Dominion Electric Cooperative and Direct Energy Business, LLC on behalf of itself and its affiliate, Direct Energy Business Marketing, LLC and American Municipal Power, Inc. 
v. 
PJM Interconnection L.L.C.
Order Denying Complaints 
ER19-1958-001 05/21/20 PJM Interconnection, L.L.C. Order on Compliance and Rehearing
EL18-145-000 05/21/20 Tilton Energy LLC
v.
PJM Interconnection, L.L.C. 
Order on Paper Hearing and Denying Complaint 
ER19-1486-000, EL19-58-000 05/21/20  PJM Interconnection, L.L.C.  Order on Proposed Tariff and Operating Agreement Revisions 
EL15-95-005  12/19/19 Delaware Public Service Commission and Maryland Public Service Commission
v.
PJM Interconnection, L.L.C. and Certain Transmission Owners Designated under CTOA RS FERC No. 42
Order Granting Rehearing and Rejecting Compliance Filing
EL05-121-013  12/19/19 PJM Interconnection, L.L.C. Order Denying Clarification and Rehearing, and Accepting Compliance Filings
EL19-27-000  12/19/19 Independent Market Monitor for PJM Interconnection, L.L.C.
v.
PJM Interconnection, L.L.C.
Order Denying Complaint
ER17-905-002  12/19/19 New York Independent System Operator, Inc.
and
PJM Interconnection, L.L.C.
Order Denying Rehearing
ER13-535-005  12/19/19 PJM Interconnection, L.L.C. Order Denying Rehearing
ER20-227-000  12/19/19 PJM Interconnection, L.L.C. and Jersey Central Power & Light Company Order Accepting and Suspending Proposed Tariff Revisions, and Establishing Hearing and Settlement Judge Procedures
ER19-1958-000  12/19/19 PJM Interconnection, L.L.C. Order on Compliance Filing
EL16-49-000, EL18-178-000  12/19/19 Calpine Corporation, Dynegy Inc., Eastern Generation, LLC, Homer City Generation, L.P., NRG Power Marketing LLC, GenOn Energy Management, LLC, Carroll County Energy LLC, C.P. Crane LLC, Essential Power, LLC, Essential Power OPP, LLC, Essential Power Rock Springs, LLC, Lakewood Cogeneration, L.P., GDF SUEZ Energy Marketing NA, Inc., Oregon Clean Energy, LLC and Panda Power Generation Infrastructure Fund, LLC
v.
PJM Interconnection, L.L.C.
Order Addressing how the Minimum Offer Price Rule (MOPR) should work in PJM’s capacity market and establish just and reasonable rates.
EL15-67-004  11/21/19 Linden VFT, LLC
v.
PJM Interconnection, L.L.C.
Order Dismissing Requests for Rehearing and Motion to Consolidate
EL17-94-000  11/21/19 New York Power Authority
v.
PJM Interconnection, L.L.C. and PJM Transmission Owners in their Collective Capacity
Order Denying Complaint
ER19-1922-000  11/21/19 PJM Interconnection, L.L.C. Order on Compliance Filings and Request for Clarification
EL14-37-000  10/17/19 PJM Interconnection, L.L.C Order Requiring Additional Briefing
EL18-61-000  10/17/19 Public Citizen, Inc. v. PJM Interconnection L.L.C. Order Denying Complaint
ER19-945-001  10/17/19 PJM Interconnection, L.L.C Order Denying Rehearing and Granting Clarification
ER18-1730-001  10/17/19 PJM Interconnection, L.L.C Order Denying Rehearing
ER19-1661-000,
ER19-1661-001
 
10/17/19 PJM Interconnection, L.L.C. and Virginia Electric and Power Company Order Accepting Tariff Revisions
ER19-469-000  10/17/19 PJM Interconnection, L.L.C. Order on Compliance Fliling, Instituting Section 206 Proceeding, and Establishing Paper Hearing
EL18-26-000  09/19/19 EDF Renewable Energy, Inc. v. Midcontinent Independent System Operator, Inc., Southwest Power Pool, Inc. and PJM Interconnection, L.L.C Order on Complaint and Technical Conference
ER18-614-003  06/20/19 PJM Interconnection, L.L.C. Order Denying Rehearing and Accepting Compliance Filings
EL08-14-012  06/20/19 Black Oak Energy, LLC, EPIC Merchant Energy, LP and SESCO Enterprises, LLC
v.
PJM Interconnection, L.L.C.
Order on Voluntary Remand and Granting Rehearing
EL17-31-000  05/16/19 Northern Illinois Municipal Power Agency
v.
PJM Interconnection, L.L.C.
Order on Complaints, Establishing Hearing and Settlement Judge Procedures, Establishing Refund Effective Dates, and Consolidating Proceedings
EL18-34-000  04/18/19 PJM Interconnection, L.L.C. Order on Paper Hearing
ER18-2401-000  03/21/19 PJM Interconnection, L.L.C. Order on Compliance filing for Order No. 844
ER09-1256-004, ER12-2708-006  01/17/19 Potomac-Appalachian Transmission Highline, LLC, PJM Interconnection, L.L.C Order on Compliance
Docket No. Date Issued Company Title
EL18-183-000  11/15/18 Radford’s Run Wind Farm, LLC v. PJM Interconnection, L.L.C. Order Granting Complaint, in Part, and Establishing Paper Hearing Procedures
EL18-145-000  09/20/18 Tilton Energy LLC v. PJM Interconnection, L.L.C. Order Establishing Paper Hearing
ER17-2267-001  09/20/18 PJM Interconnection, L.L.C. Order Denying Rehearing
ER17-2073-001  09/20/18 PJM Interconnection, L.L.C. Order Denying Rehearing
ER17-1016-001  04/19/18 PJM Interconnection, L.L.C. Letter Order on Uncontested Settlement
ER15-623-010, EL15-29-006, EL15-41-002  01/18/18 PJM Interconnection, L.L.C. Order on Rehearing
ER16-2401-000, EL16-96-000  01/18/18 PJM Interconnection, L.L.C. Order on Response to Show Cause Order
ER17-419-000, ER17-419-003  01/18/18 PJM Interconnection, L.L.C. Letter Order on Uncontested Settlement
ER17-1236-000, ER17-1236-001  01/18/18 PJM Interconnection, L.L.C. Order on Cost Allocation Report and Tariff Revisions and Denying Request for Rehearing
Docket No. Date Issued Company Title
EL18-34-000  12/21/17 PJM Interconnection, L.L.C. Order Instituting Section 206 Proceeding and Paper Hearing
ER17-528-000, ER17-528-001  11/16/17 PJM Interconnection, L.L.C. Order Rejecting Proposed Tariff Revisions
ER17-249-001  11/16/17 PJM Interconnection, L.L.C. Order Denying Rehearing
ER17-2362-000  11/16/17 PJM Interconnection, L.L.C. Order on Tariff Revisions and Cost Allocation Report
ER17-1306-000  09/20/17 PJM Interconnection, L.L.C. Letter Order Accepting Tariff Revisions
EL13-88-001, ER16-1967-000, ER16-1969-000, -001  01/19/17 Northern Indiana Public Service Company

v.

Midcontinent Independent System Operator, Inc. and

PJM Interconnection, L.L.C.

PJM Interconnection, L.L.C.

Midcontinent Independent System Operator, Inc.
Order on Rehearing and Compliance
ER13-1654-001, -002  01/19/17 PJM Interconnection, L.L.C. Letter Order Accepting Compliance Filing
EL14-37-000  01/19/17 PJM Interconnection, L.L.C. Order on Section 206 Investigation
ER09-1256-002 and ER12-2708-003  01/19/17 Potomac-Appalachian Transmission Highline, LLC and PJM Interconnection, L.L.C. Order on Initial Decision
Docket No. Date Issued Company Title
ER16-453-000 and ER16-453-001  11/17/16 PJM Interconnection, L.L.C.

Northeast Transmission Development, LLC
Letter Order Approving Settlement
ER14-1831-003  09/22/16 PJM Interconnection, LLC

Virginia Electric and Power Company
Order Denying Rehearing
ER15-623-006, ER15-623-007, ER15-623-008, EL15-29-004, and EL15-80-001  06/16/16 PJM Interconnection, L.L.C.

Advanced Energy Management Alliance Coalition

v.

PJM Interconnection, L.L.C.
Order on Rehearing and Compliance
EL14-94-001 and ER16-1291-000  06/16/16 PJM Interconnection, L.L.C. Order On Rehearing And Compliance
ER16-746-001 and EL16-57-000  05/19/16 Constellation Power Source Generation, LLC Order Accepting Proposed Rate Schedule, Granting Waiver, Instituting Section 206 Proceeding, and Establishing Hearing and Settlement Judge Procedures
ER13-2108-001  04/21/16 PJM Interconnection, L.L.C. Order on Rehearing
ER14-504-001  04/21/16 PJM Interconnection, L.L.C. Order on Rehearing
ER14-822-002, -003  04/21/16 PJM Interconnection, L.L.C. Order on Rehearing and Compliance
EL12-54-000  04/21/16 Viridity Energy, Inc.

v.

PJM Interconnection, L.L.C.
Order Denying Complaint
EL14-20-000  04/21/16 Independent Market Monitor for PJM

v.

PJM Interconnection, L.L.C.
Order on Complaint
EL13-88-000  04/21/16 Northern Indiana Public Service Company

v.

Midcontinent Independent System Operator, Inc. and PJM Interconnection, L.L.C.
Order on Complaint and Technical Conference
EL16-9-000  03/17/16 Big Sandy Peaker Plant, LLC

Wolf Hills Energy, LLC

Crete Energy Venture, LLC

Lincoln Generating Facility, LLC

Rolling Hills Generating, L.L.C

v.

PJM Interconnection, L.L.C.
Order Denying Complaint
ER11-2814-001, -002, -004; ER11-2815-001, -002, -003, -004, -006; ER11-3279-001, -002, -003  03/17/16 PJM Interconnection, L.L.C.

Midwest Independent Transmission System Operator, Inc.
Order Denying Rehearing, Granting Clarification In Part, And Accepting Compliance Filings Subject To Condition
ER16-619-000  02/18/16 PJM Interconnection, L.L.C. and

Public Service Electric and Gas Company
Order Accepting Transmission Rate Incentive Filing
Docket No. Date Issued Company Title
ER12-2708-002 and ER09-1256-001  (consolidated) 12/17/15 PJM Interconnection, LLC and

Potomac-Appalachian Transmission Highline, L.L.C.
Order Denying Rehearing
ER12-2399-003 
(Opinion No. 543)
11/19/15 PJM Interconnection, L.L.C. and

American Transmission Systems, Inc.
Order On Initial Decision
ER15-2260-001 and EL14-24-000 11/19/15 PJM Interconnection, L.L.C. Order Accepting Proposed Tariff Records
EL08-14-010  11/19/15 Black Oak Energy, L.L.C. EPIC Merchant Energy, L.P. and SESCO Enterprises, L.L.C.

v.

PJM Interconnection, L.L.C.
Order on Remand
EL15-83-000  11/19/15 Joint Consumer Representatives

v.

PJM Interconnection, L.L.C.
Order Denying Complaint
ER13-535-002 and ER13-535-003  10/15/15 PJM Interconnection, L.L.C. Order on Rehearing and Compliance
EL15-46-000  10/15/15 Champion Energy Marketing, LLC

v.

PJM Interconnection, L.L.C. and

PJM Settlement, Inc.
Order Denying Complaint and Request For Waiver
ER14-2940-001, -002  10/15/15 PJM Interconnection, L.L.C. Order on Rehearing and Compliance
ER14-1469-002  07/16/15 PJM Interconnection, L.L.C. Order Denying Motion For Clarification And Request For Rehearing
ER15-696-000  06/18/15 PJM Interconnection, L.L.C. Order Conditionally Accepting Tariff Revisions and Directing Compliance Filing
EL15-18-000, ER14-972-001, -002  06/18/15 Consolidated Edison Company of New York, Inc. v. PJM Interconnection, L.L.C.

PJM Interconnection, L.L.C.
Order Denying Complaint, Denying Rehearing, And Accepting Compliance Filing
ER15-3-001  06/18/15 PJM Interconnection, L.L.C.
Commonwealth Edison Company
Order Denying Rehearing
ER12-91-008 & ER12-92-008  04/16/15 PJM Interconnection, LLC, Duke Energy Ohio, Inc. and Duke Energy Kentucky, Inc Order Approving Uncontested Settlement
ER14-503-002  01/22/15 PJM Interconnection, LLC Order Denying Rehearing

 

This page was last updated on December 20, 2023